芬顿试剂处理煤矿矿井水中硫化氢技术

为了消除煤矿矿井下硫化氢所造成的安全隐患，使用芬顿试剂对矿井水中硫化氢进行了处理，主要考察了过氧化氢的投加量、FeSO4 ·7H2 O的投加量、pH值、反应时间、摇床转速及反应温度等对处理效果的影响，并讨论了Fenton试剂高级氧化技术除硫化氢的反应动力学。结果表明：Fenton试剂的最佳用量为0.67 g/L FeSO4 ·7H2 O+0.67 mL/L H2 O2 ，反应适应pH值为6~10，最适水流扰动强度为160 r/min的摇床转速，最佳反应温度25 ℃，最佳反应时间10 min。在最佳条件下，Fenton试剂处理初始浓度为140 mg/L的硫化氢水溶液时去除率达到93.14%，水中剩余硫化氢浓度仅为2.381 mg/L，有效防止了硫化氢的溢出。Fenton试剂处理水中硫化氢的过程可以用准二级动力学来描述。

Treatment of H2S in mine water using Fenton reagent

In order to eliminate hidden danger caused by H2S in the coal mine，Fenton reagent was used to treat H2S in the mine water.In this study，the effects of H2 O2 dosage，FeSO4 ·7H2 O dosage，pH，reaction time，rotation speed，reaction temperature on the treatment efficiency were researched.In addition，the study investigated the kinetics of removing hydrogen sulfide using Fenton reagent.The results show that the optimum dosage of Fenton reagent is 0.67 g/L FeSO4 ·7H2 O+0.67 mL/L H2 O2 ，the suitable pH is 6-10，the optimum flow disturbance intensity is 160 r/min of bed rotation speed，and 25 ℃ for 10 min.Under optimal conditions，when the initial concentration of hydrogen sulfide is140 mg/ L，the removal rate of hydrogen sulfide can reach 93.14% and the concentration of residual hydrogen sulfide in water is only 2.381 mg/L.The process of the removing reaction of H2S by Fenton reagent can be described to be the quasi second order kinetics.